Pretty white flower

Last of the pretty mystery trees/shrubs.
Mauritius again.
You are doing really well so far and your expert help is again requested.
Flowers here.
Leaves in next post

 

The leaves.

 

It is surely a Rubiaceae... Coptosperma sp. or an Ixora sp.?

 

I had considered Ixora...but rules it out as most flowers were 5 petals.

Coptosperma...never hear of it.
My first look on www I found this image.
It seems to show identical very odd buds as image 6 in above leaf post.

Narrow-leaved Butterspoon (Coptosperma supra-axillare) · iNaturalist.org

I will continue to check it out.
But on first glance I believe you have got it.

As always...many many thanks for your expert help.
S.s.